Safety device for charged soda-water tanks.



1, BENZION. SAFETY DEVICE FOR CHARGED SODA WATER TANKS.

APPLICATION FILED OCT- 9. I917.

Patented Dec. 17, 1918.

UNITED STATES PATENT carton.

JOSEPH IBENZION, OF NEW YORK, N. Y.

SAFETY DEVICE FOR CHARGED SODA-WATER TANKS.

Application filed October 9, 1917. Serial No. 195,634.

To all whom it may concern:

Be it known that I, JOSEPH BENZION, a

citizen of the United States, residing in which often causes the metal tank to burst and this results in damage to the surroundings and sometimes causes the death of persons nearby. My present invention seeks to overcome this drawback by providing the ordinary valved cock of the tank with a relief valve which is automatically opened whenever the contents of the tank has its pressure increased above a certain predeter mined degree and thereby reduces the pressure to the desired and safe degree, Whereupon the valve automatically closes and preserves the desired pressure in the tank.

I have illustrated the invention'in the ac companying drawings, wherein Figure l, is a side view of the improved valve fitting shown as mounted in operative position on a soda-water tank, the upper portion only of which is shown and that is in vertical central section.

Fig. 2, is a vertical sectional view of the parts shown in Fig. l, the plane of the section being indicated by the line 2-2, in Fig. 1.

Fig. 3, is a vertical sectional view of the valve-fitting shown as detached from the tank, the plane of the section being indicated by the line 33, in Fig.- 2. i

Fig. 4., is a vertical sectional View taken through the relief valve, and shows the same in open position.

Referring to the drawings in which like numbers of reference designate like parts throughout, 1 is'a closed metal vessel or tank having at its upper end an outlet 2, threaded upon its interior for the reception of a threaded tubular neck 3, of the valvefitting 4, which is thereby detachably mounted on the tank. A pipe 5, is secured in the mouth of the neck and extends to a point near the bottom of the tank for drawing off the contents thereof in the usual way. A

- Specification of Letters Patent.

' j Patented Dec. 17, 1918.

metal washer 6, is interposed between the valve casing 4 and the outlet extension 2, and surrounds the neck so as to make a gas and water tight joint.

A passage 7, leads through the neck 3, to the valve-seat 8, in the valve-chamber 9, in the casing and. this passage is controlled by the hand-operated valve 10, having a stem 11, externally screw-threaded at 12, and which thread takes into a corresponding thread in the interior of the boss 13,

formed on the valve-casin and throu h which the stem passes. The outer end of the valve stem is provided with a hand-wheel 14, for manipulating the valve to control the flow of liquid from the tank through the outlet passage 15, leading from the valve chamber 9, through the tubular extension 16, which is provided with an external thread 17, for receiving a suitable pipe connection through which the liquid may be drawn off and which is not shown.

One side of the casing 4, is provided with a suitable projecting part 18, formed with a valve-chamber 19, in which is located the valve-seat 29, surrounding the mouth of the by-passage 21, which extends through the wall of the neck 3, and leads into the interior of the tank so as to be in free communication therewitln The by pass communicates with the outer air by way of the valve-chamber 19, and a vent 22, extending through the wall of the same. A valve 23, having a soft washer 21, closes on the seat 20, and controls the by-pass and its communication with the vent 22, and this valve has a stem 25, around which is placed a coiled spring 26, the inner end of which bears against the valve while the outer end thereof bears against an adjustable cup-shaped plug 27, havlng a thread 28, which works in a corresponding thread 29, in' the outer part of the chamber 19. The screw-plug 27, has on its outer face a slot 30, adapted to reccive the blade of a tool by which the plug may be turned either Way on its axis to adjust it so as to vary the spring action on the valve. When the plug is screwed inwardly it increases the pressure of the spring on the valve and when turned in the opposite direction it weakens the pressure of the spring. Whenever the relief-valve 23, is lifted from its seat by the pressure of the contents of the tank which are at all times in free communication with said valve, the

interior of the tank is vented around the valve and through the vent 22, to the outer air.

From the foregoing description, it will be readily understood that infilling the tank at the factory with water charged with carbonic acid, or other gas, under a high pressure, a pressure gage is used so that a predetermined degree of pressure may be placed upon. the contents of the tank and then the relief-valve is adjusted to open automatically at a slightly greater pressure and the tank is then shipped to a customer for use in connection with a fountain it in such use or while being transported or during storage the pressure of the contents or" the tank should become unduly increased, the relief-valve'will automatically open and reduce such pressure to the safety point and thereby prevent a possible explosion of the tank it will be noted that all of the parts except the movable and detachable ones, are made in a single metal casting, and that the relief-valve is conveniently made a part of the main valve fitting so that a separate part is not employed for such safet device. The chamber 19, of the reliei valve is formed in a solid part oft-he fitting and the by-pass 21, may be cast or may be bored throughthe walls of the fitting as indicated in the drawings. The means for regulating the tenslon on the relief-valve are well housed and protected from damage by rough han-' (l'ling of the tank when in use.

My improvements may be applied to valve-fittings of the ordinary kind which are now used in conjunction with sodawater tanks and I wish to be understood as not limiting my invention to, the particular constructions herewith shown, for modifications may be made in the difierent parts thereof without however departing from the spirit of the invention.

Having thus described my invention, what I claim and desire to secure by Letters Patent is 1. '5. he combination with a charged-water tank, of a valve-fitting having a centrally chambered casing and provided with a downwardly extending neck and a lateral neck each provided with a en'tending through the neck and leading to the bearing in said boss, a lateral projection on said casing between said boss L neck and provided with a tv-valve ch her, a by-passage leading a Irena said s valve chamber throu h said depend to the end thereoi so as to conimuni the interior of the tank, a valve-Seat the safety-valve chamber surrounding said bypassage, an adjlustable spring-actuated valve coiiperating with said seat, and a vent connecting said safety-valve chamber with the outer air, substantially as described.

2. T he combination with a. charged-water tank, of a valve-fitting having a casing formed with a main-valve chamber and provided upon its exterior with two each having a passage extending through it and leading to the main-valve chamber, one of said necks being adapted for attachment to a pipe-connection and the other being adapted to connect with theinterior of the tank and a drawing-0E pipes'ecured to said latter neck and disposed within the tank for drawing 05 the liquid contents thereof, a main-valve in said chamber ior controlling the passage in the neck having the of? pipe attached thereto, a by ing from the exterior of the point on the inner end of the ne" with the tank so as to comm the interior of the tank at its a an adjustable spring-actuate controlling said by-passage, described. In testimony whereof, have hereinte my hand in the presence or" the sat-scrib ing witnesses.

Witnesses:

Winnie Fownrza,

Wanner Banov. 

